Writing in the Washington Post, two prominent Jewish figures in the U.S. believe there is a need for Jews to stand firm in opposing President-elect Donald Trump.

Half a century ago, Rabbi Abraham Joshua Heschel wrote, “Let us yield no inch to bigotry, let us make no compromise with callousness.” As leaders of Jewish organizations committed to human rights, we believe that if ever there were a moment to commit to making no compromises with callousness, that moment must be now.

A platform so explicitly bigoted may be unprecedented in modern American politics, but it isn’t new to Jews.